Commit 2a3d4f1f authored by Al Viro's avatar Al Viro Committed by Linus Torvalds
Browse files

[PATCH] __crc_... is intended to be absolute



i386 boot/compressed/relocs checks for absolute symbols and warns about
unexpected ones.  If you build with modversions, you get ~2500 warnings
about __crc_<symbol>.  These suckers are really absolute symbols - we
do _not_ want to modify them on relocation.

They are generated by genksyms - EXPORT_... generates a weak alias, then
genksyms produces an ld script with __crc_<symbol> = <checksum> and it's
fed to ld to produce the final object file.  Their only use is to match
kernel and module at modprobe time; they _must_ be absolute.

boot/compressed/relocs has a whitelist of known absolute symbols, but
it doesn't know about __crc_... stuff.  As the result, we get shitloads
of false positives on any ld(1) version.
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 9abcf40b
......@@ -43,6 +43,8 @@ static int is_safe_abs_reloc(const char* sym_name)
/* Match found */
return 1;
}
if (strncmp(sym_name, "__crc_", 6) == 0)
return 1;
return 0;
}
......
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